| Organism | : | Echinoderm Sea urchin |
|---|---|---|
| Species | : | Paracentrotus lividus |
| Description | : | The ciliated epithelial cells forming the blastula secrete enzymes witch digest the fertilization envelope surrounding the blastula wich swims away using its ciliated cells - Reproduction, fertilization and development of sea urchin |
| Tags | : | Blastula Fertilization |